What's The Best Sequel Ever?

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Let's talk, it's Tell Us Dammit.

Here's how it works: We ask a question, you answer it. Simple and no strings attached! This isn't some marketing survey or whatever. It's an emotional investment in you. Yes, we're interested in knowing you, Kotaku reader person.

You probably know oodles about us - more than you even want to, we're sure. But, hey, we'd like to know about you. That way you won't be some faceless blob - and we might feel a tinge of guilt when we ban ya. Or not, because really we're incapable of human emotion.

Question: With Mario Galaxy 2, what do you think is the best sequel ever? It doesn't merely have to be second game, but can be the third, fourth and so on.